1) Your profile indicates you're using the Freephoneline desktop application. Is that accurate?
2) Are you also using it with Windows 10?
3) What brand and model modem are you using?
4) What brand and model router are you using?
5) If you're not using the desktop application, what brand and model ATA, IP Phone, or SIP app are you using with Freephonline's VoIP unlock key?
Make sure that you're not muting anything (microphone/speakers), and that you tested to ensure your mic is working before fiddling around with the app:
http://win10faq.com/fix-microphone-settings/And make sure you test incoming calls for 1-way audio issues before paying anything to FPL (you'll need a mic and headphones/speakers to test). Test on a computer that's connected to your router (without DMZ or port forwarding enabled). Should you encounter 1-way audio issues, look for a feature called SIP ALG in your router (you may need to call your ISP if you're using a modem/router combo) and disable that feature.
a.
Netgear R7000 routersUpdate firmware. Disable SIP ALG in this router. Then reboot modem, router, and ATA in that order. Then test again.
If you have a Netgear R7000 router, you may need to install third party XWRT-Vortex firmware. I recommend doing this anyway to obtain easy access to both UDP Unreplied and UDP Assured timeout settings. Afterwards, turn off the router and the ATA. Turn on the router. Wait for it to be fully up and running (including Wi-Fi). Then turn on the ATA. Download XWRT-Vortex here:
http://xvtx.ru/xwrt/download.htm. In your router, navigate to Advanced Settings–>WAN–>NAT Passthrough–>SIP Passthrough. Change SIP Passthrough to “Enabled + NAT helper.” Click “Apply.”
b.
Nettis 4422 modem from Carry Telecom (click the "Internet" tab)
http://www.carrytel.ca/support.aspxc : DSL - My VoIP phone does not work with Netis 4422 modem.
d : Please download the newest Netis firmware at
http://www.carrytel.ca/download/netis1228.zip. Unzip the netis1228.zip file and update the firmware file netis1228.img for your modem. The new firmware has been tested and working with most of Voip phone providers
e.
Asus VLAN A number of people have been trying to eliminate Bell Hubs from their setups by using Asus VLAN.
At the time of this guide being written, NAT acceleration must be disabled in that VLAN setup in order for SIP services, including Freephoneline, to work properly. In your router, navigate to Advanced Settings-->LAN-->Switch Control-->NAT Acceleration. Select "disable." Click "apply."Then reboot your modem, router (wait for Wi-Fi SSIDs to populate first before rebooting ATA), and your ATA, in that order.
To determine whether you need NAT Acceleration enabled, visit
https://routerguide.net/nat-acceleration-on-or-off/. If you do require NAT Acceleration to be enabled, don’t use VLAN with Asus routers.
f.
Hitron CGN series gateway modem/router combos (from Rogers, Shaw, or another ISP) or any modem/router combo from any ISP with SIP ALG forced on
If you don’t have your own router, and if you can’t get someone from Rogers or your ISP to disable SIP ALG for you in their modem/router combo, your ATA may need to register with voip4.freephoneline.ca:6060. The purpose of voip4.freephoneline.ca:6060 is to help circumvent faulty SIP ALG features in routers. So, if you’re experiencing one-way audio issues as a result of SIP ALG, this is the SIP server to try. Check to ensure that you can’t disable SIP ALG yourself (refer to point E below).
g.
Hitron CGN3ACSMR and CODA-4582 series gateway modem/router combos from Rogers (and possibly other ISPs)
Open your web browser, and login at 192.168.0.1. Default username is cusadmin.
Select the “Basic” tab and disable “SIP ALG.” Click the “save changes” button.
h.
Concerning Bell Hubs, (This may also apply to Telus)
Typically it's better to have your own router and to stick whatever modem/router combo your ISP gives you into bridge mode:
http://forums.redflagdeals.com/please-s ... r-1993629/